Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760870Ab2J2Upq (ORCPT ); Mon, 29 Oct 2012 16:45:46 -0400 Received: from mail-wg0-f44.google.com ([74.125.82.44]:38698 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760804Ab2J2Upn (ORCPT ); Mon, 29 Oct 2012 16:45:43 -0400 Message-ID: <508EEAF2.4090506@ursulin.net> Date: Mon, 29 Oct 2012 20:45:38 +0000 From: Tvrtko Ursulin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121017 Thunderbird/16.0.1 MIME-Version: 1.0 To: Milan Broz CC: dm-crypt@saout.de, linux-kernel@vger.kernel.org, okozina@redhat.com, linux-rt-users@vger.kernel.org Subject: Re: [dm-crypt] cryptsetup not working under 3.6 - RT patch set seem to break it References: <50830D33.5050807@ursulin.net> <5083C61C.5090807@gmail.com> <5083E4A8.3060501@ursulin.net> <5083E87B.2080908@gmail.com> <5083EC61.8070505@ursulin.net> <50844D01.9090805@gmail.com> <5084551E.5040304@ursulin.net> <508ED985.5060301@ursulin.net> <508EDD6E.7030908@gmail.com> <508EE395.9010709@ursulin.net> In-Reply-To: <508EE395.9010709@ursulin.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3935 Lines: 127 On 29/10/12 20:14, Tvrtko Ursulin wrote: > On 29/10/12 19:47, Milan Broz wrote: >> On 10/29/2012 08:31 PM, Tvrtko Ursulin wrote: >>> Just tried 3.6.4 and it is still broken. Is there anything else I could >>> try to debug this? >> >> See response from response from Ondra on dmcrypt list - your kernel >> config >> is perhaps broken. > > I don't think that reached me - perhaps I was not copied. > > Weird yes, I mean no one can spot anything bad with my config... > >> Please use fresh checkout, run make oldconfig and try again. >> (Many people use 3.6 already and there is no other report.) > > ... and I just used it today to configure a fresh 3.6.4 (plus -rt10 > patches) without a problem. > > Unless RT patchset is the culprit. Hm.. that would be unexpected, but I > guess it is worth a shot. I'll let you know what happens without -rt. Ha, this is exciting, vanilla 3.6.4 works, with -rt10 patch it does not. Copying in linux-rt-users. To recap, 3.6 RT seems to break dm-crypt. Try it like this: cryptsetup --debug --key-file=- luksOpen /some/luks/formatted/file any-label And kernel will fail like this: Kernel says this: device-mapper: table: 252:1: crypt: Error allocating crypto tfm device-mapper: ioctl: error adding target to table I think crypto modules are not getting auto loaded for some reason, but even if I load them manually before hand and still breaks in the same way. Maybe someone will have a "ah yes" moment? Here is the diff between working (vanilla 3.6.4) and non-working (3.6.4-rt10) configs: --- 1 2012-10-29 20:37:49.472306922 +0000 +++ 2 2012-10-29 20:37:52.319732779 +0000 @@ -892,7 +892,6 @@ # CONFIG_DEBUG_SECTION_MISMATCH is not set # CONFIG_DEBUG_SET_MODULE_RONX is not set # CONFIG_DEBUG_SG is not set -# CONFIG_DEBUG_SHIRQ is not set # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_STACKOVERFLOW is not set # CONFIG_DEBUG_STACK_USAGE is not set @@ -1810,7 +1809,7 @@ CONFIG_MTRR_SANITIZER=y CONFIG_MTRR=y # CONFIG_MULTICORE_RAID456 is not set -CONFIG_MUTEX_SPIN_ON_OWNER=y +# CONFIG_MUTEX_SPIN_ON_OWNER is not set # CONFIG_MWAVE is not set CONFIG_NAMESPACES=y CONFIG_NATIONAL_PHY=y @@ -1842,7 +1841,6 @@ CONFIG_NET_CLS_TCINDEX=m CONFIG_NET_CLS_U32=m CONFIG_NET_CLS=y -# CONFIG_NETCONSOLE is not set CONFIG_NET_CORE=y CONFIG_NETDEVICES=y # CONFIG_NET_DSA is not set @@ -2260,9 +2258,13 @@ CONFIG_PPP=y # CONFIG_PPS is not set CONFIG_PREEMPT_COUNT=y +# CONFIG_PREEMPT__LL is not set # CONFIG_PREEMPT_NONE is not set CONFIG_PREEMPT_NOTIFIERS=y CONFIG_PREEMPT_RCU=y +CONFIG_PREEMPT_RT_BASE=y +# CONFIG_PREEMPT_RTB is not set +CONFIG_PREEMPT_RT_FULL=y # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y CONFIG_PREVENT_FIRMWARE_BUILD=y @@ -2368,11 +2370,10 @@ CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_LIB=y -# CONFIG_RT_GROUP_SCHED is not set CONFIG_RT_MUTEXES=y # CONFIG_RT_MUTEX_TESTER is not set -# CONFIG_RWSEM_GENERIC_SPINLOCK is not set -CONFIG_RWSEM_XCHGADD_ALGORITHM=y +CONFIG_RWSEM_GENERIC_SPINLOCK=y +# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set # CONFIG_SAMPLES is not set # CONFIG_SATA_ACARD_AHCI is not set CONFIG_SATA_AHCI=m @@ -2851,7 +2852,6 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y # CONFIG_TRACE_SINK is not set CONFIG_TRACING_SUPPORT=y -# CONFIG_TRANSPARENT_HUGEPAGE is not set CONFIG_TREE_PREEMPT_RCU=y # CONFIG_TREE_RCU_TRACE is not set CONFIG_TUN=y @@ -2867,7 +2867,6 @@ CONFIG_UID16=y # CONFIG_UIO is not set # CONFIG_ULTRIX_PARTITION is not set -CONFIG_UNINLINE_SPIN_UNLOCK=y CONFIG_UNIX98_PTYS=y CONFIG_UNIX_DIAG=y # CONFIG_UNIXWARE_DISKLABEL is not set No crypto related differences. Tvrtko -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/